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v1
Brett 2023-08-01 13:58:08 -04:00
parent a0492df393
commit c6cb3c59d4
2 changed files with 42 additions and 4 deletions
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5
include/blt/parse/argparse.h
View File

@ -154,9 +154,9 @@ namespace blt::parser {
arg_vector_t a_flags;
arg_action_t a_action = arg_action_t::STORE;
arg_nargs_t a_nargs = 0;
std::optional<std::string> a_const{};
std::string a_const{};
std::string a_default{};
std::string a_def{};
std::string a_dest{};
std::string a_help{};
std::string a_metavar{};
bool a_required = false;
@ -231,6 +231,7 @@ namespace blt::parser {
} loaded_args;
private:
static bool validateArgument(const arg_properties_t& args);
bool consumeArguments(arg_tokenizer_t& arg_tokenizer, const arg_properties_t& properties, std::vector<std::string>& v);
bool consumeFlagArguments(arg_tokenizer_t& arg_tokenizer, const arg_properties_t& properties, arg_data_t& arg_data);
void handlePositionalArgument(arg_tokenizer_t& arg_tokenizer, size_t& last_pos);
void handleFlagArgument(arg_tokenizer_t& arg_tokenizer);

41
src/blt/parse/argparse.cpp
View File

@ -128,6 +128,13 @@ namespace blt::parser {
if (args.a_required)
user_args.required_vars.insert(args.a_flags);
if (args.a_nargs.flags == arg_nargs_t::UNKNOWN) {
if (args.a_flags.getNames().empty())
loaded_args.flag_args[args.a_flags] = args.a_default;
else
loaded_args.positional_args[args.a_flags] = args.a_default;
}
}
const argparse::arg_results& argparse::parse_args(int argc, const char** argv) {
@ -136,7 +143,7 @@ namespace blt::parser {
loaded_args.program_name = arg_tokenizer.next();
BLT_TRACE("Loading args for %s", loaded_args.program_name.c_str());
size_t last_positional;
size_t last_positional = 0;
while (arg_tokenizer.hasNext()) {
// a token isn't a flag it must be a positional arg as flags will consume nargs
if (!arg_tokenizer.isFlag()){
@ -170,6 +177,7 @@ namespace blt::parser {
}
auto flag_properties = loc->second;
auto dest = flag_properties->a_dest.empty() ? flag_properties->a_flags : arg_vector_t{flag_properties->a_dest};
arg_data_t data;
switch(flag_properties->a_action){
@ -203,7 +211,7 @@ namespace blt::parser {
case arg_action_t::VERSION:
break;
}
loaded_args.flag_args[flag_properties->a_flags] = data;
loaded_args.flag_args[dest] = data;
}
bool argparse::consumeFlagArguments(arg_tokenizer_t& arg_tokenizer, const arg_properties_t& properties, arg_data_t& arg_data) {
@ -218,5 +226,34 @@ namespace blt::parser {
return false;
}
bool argparse::consumeArguments(arg_tokenizer_t& arg_tokenizer, const arg_properties_t& properties, std::vector<std::string>& v) {
switch (properties.a_nargs.flags) {
case 0:
for (int i = 0; i < properties.a_nargs.args; i++) {
if (arg_tokenizer.isFlag()) {
BLT_WARN("Expected %d arguments, got flag instead!", properties.a_nargs.args);
return false;
}
v.emplace_back(arg_tokenizer.next());
}
return true;
case arg_nargs_t::UNKNOWN:
// no arg next
if (arg_tokenizer.isFlag()) {
if (!properties.a_const.empty())
v.emplace_back(properties.a_const);
return true;
}
v.emplace_back(arg_tokenizer.next());
return true;
case arg_nargs_t::ALL:
break;
case arg_nargs_t::ALL_REQUIRED:
break;
}
return false;
}
}